Comparative emigration, immigration, and colonization of apple by Metaseiulus occidentalis Nesbitt and Typhlodromus pyri Scheuten (Acarina:  Phytoseiidae)
By: by John E. Dunley.
Published: 1989
Language: eng
Number of pages: 61
Subjects: Phytoseiidae.; Spider mites -- Biological control.; Apples -- Diseases and pests -- Integrated control.
Notes: Typescript (photocopy).

Thesis (M.S.)--Oregon State University, 1990.

Includes bibliographical references (leaves 57-61).